"I feel like most people in their lifetime have been bullied at some point, and I think that it's about time that people start making a change," Bieber said, adding that incidents often get brushed under the rug by principals, teachers and other students.

"I think the movie is really powerful and it can help change a lot of lives," Bieber added.

Bieber also wants bystanders to speak up to stop bullies. In a news release, Bieber encouraged his fans to watch the movie with their friends and help start the conversation to end bullying.

"My fans are always up for supporting a great cause. It's one of the things I'm most proud of as an entertainer," Bieber said.